@mixin centerX () {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

@mixin centerY () {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

@mixin centerBoth () {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@mixin flexCenter () {
    display: flex;
    justify-content: center;
    align-items: center;
}

@mixin flexBetween () {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@mixin flexAround () {
    display: flex;
    justify-content: space-around;
}

@mixin fullscreenMask() {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.5);
}